Edwin crawley



(No Model.) I

E. ORAWLEY,J1 .'& W. T. JOHNSTON. COFFEE ROASTING MACHINE. v

v If vPatented t. 14,1897;

Jw fi'mu/t W 5: W C. M I m fiknns 104% 6% v '61 EDWVIN ORAlVLEY, JR, AND\VILLIAM T. JOHNSTON, OF NElVPORT KENTUCKY, ASSIGNORS TO NEW YORK, N. Y.

THE POTTER-PARLIN COMPANY, OF

COFF'EE-ROASTlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 590,134, datedSeptember 14, 1897.

Application filed September 80, 1896. Serial No. 607,472. (No model.)

To (1, whom it may concern:

Beitknown that we, EDWIN ORAWLEY, Jr., and WILLIAM T. JOHNSTON, citizensof the United States, residing at Newport, in the county of Campbell andState of Kentucky, have invented certain new and useful Improvements inCoffee-Roasting Machines; and we do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention has relation to coffeeroast:

ing machines; and it has for its object to provide a simple,inexpensive, and efficient device or means wherebysamples of thecoffeeberries are automatically delivered eXteriorly of the drum during therotation of the latter in the process of roasting to enable the op-'erator to determine the degree of roast and such samples thenautomatically returned into the interior of the drum.

With the above object in view the invention consists in the novelconstruction, arrangement, and combination of parts constitilting thesampling device and the combination of the latter with a roastingdrum,all as hereinafter fully described, illustrated in the drawings, andpointed out in theappended claims.

In the drawings, Figure 1 is a sectional view, partly in elevation,illustrating theapplication of the invention to a coffee-roasting drum.Fig. 2 is a face view. Fig. 3 is a detail view showing a portion of thegearing.

Our improved sampling device may be readily applied to anycoffee-roasting ma chine having a hollow trunnion through which thesamples of berries are to be passed.

In the drawings, 1 indicatesa hollow tru11- nion of a coffee-roastingdrum, which drum is adapted to be rotated by any suitable means duringthe roasting process.

2 indicates an annular'support, hub, or

block arranged Within the trunnion and held stationary therein by anysuitable means as, for instance, by a bracket or brackets 3, boltedtothe block and to the supportingframe of the machine.

5o 4 indicates a disk vertically arranged with in the block and adaptedfonrotation therein. This disk is provided at one end with a toothedrim, or it may carry a gear-wheel, as indicated at 5, with which lattergears a pinion- 6 on a horizontal shaft 7, mounted in a bearing 8 ontheblock. The opposite end of the shaft carries a pinion 9, which gearswith teeth 10 cut on the outer face of the trunnion, so that rotation ofthe latter causes rotation of the disk at.

The disk 4 is provided with one or more chambers or cavities 11 initsperiphery, (one only being shown in the present instance.) Each recessor cavity is of approximately the shape shown-that is to say, each hasinclined bottom 12, forming more or less of an obtuse angle. The numberof the cavities or recesses may of course be varied, as may also thedegree of the angle of the bottom 12 to some extent. The disk should beof such diameter that when in position in the block its peripheral edgeprojects beyond the inner face of the block, so as to adapt the berries,which are constantly thrown about in the drum during its rotation, to beprojected into a recess 11 when the latter comes into proper position,as illustrated in Fig. 1.

14 indicates a suitable tray or pan which is preferably pivotallyconnected with the block and arranged in such position as to receive thesample of berries from the recess 11 as the latter reaches a positionwith the inclined bottom slanted toward the tray, as indicated in dottedlines at the left of Fig. 1, in which position the berries will fallalong the bottom of the recess into the tray, soas to be inspected bythe operator to determine the degree of roast.

If desired, the tray may be caused to automatically return its contentsagain into the recess and thence into the interior of the drum, and forthis purpose said tray is provided with an upwardly-extending arm 16,carrying a roller 17, which bears against a flange 18 on the trunnion,so that after the cavity has deposited its contents into the tray theroller will be caused to tilt the tray and discharge its contents backinto the recess and carried thereby around until it reaches the positionindicated in dotted lines on the right side of Fig. l, at which pointthe berries will fall into the interior of the drum.

The time elapsing between the deposit of the berries from the recessinto the tray and the return of the same berries again into the recessby the tray will be found sufficiently long to enable the operator tojudge of the degree of roast, inasmuch as in practice the rotation ofthe trunnion is somewhat slow.

In order that the arm 16 might be operated to effect the tilting of thetray, the flange may be of a cam shape--that is to say, having adepression at about its highest point into which the roller falls underthe action of a suitable spring, as 19.

We claim and desire to secure by Letters Patent-- 1. In a samplingdevice for coifee-roasting machines the combination with a hollowtrunnion of a roasting-drum and a block arranged therein, of a rotatabledisk arranged in the block and having a cavity or recess, and a traycarried by the block and adapted to receive the contents of the recessat each rotation of the disk.

2. In a sampling device for coffee roastin g machines the combinationwith a hollow trunnion of a roasting-drum and a block arranged therein,of a rotatable disk arranged in the block and having a cavity or recess,and a tray pivotally connected with the block and adapted to receive thecontents of the recess at each rotation of the disk, said tray adaptedto be tilted to cause the contents to be returned again into the recess.

3. In a sampling device for coffee-roasting machines the combinationwith a hollow trunnion of a roasting-drum and a block arranged therein,of a rotatable disk arranged in the block and having a cavity or recess,the bottom of which is inclined to form more or less of an angle asdescribed, and a tray 'carried by the block adapted to receive thecontents of the recess at each rotation of the disk.

4:. The combination with the hollow trunnion of a coffee-roasting drum,of a block stationarily arranged therein, a rotatable disk within theblock and having a peripheral recess or cavity whose bottom is inclinedas described, and a tray carried by the block and adapted to receive thecontents of the recess at each rotation of the drum.

5. The combination with the hollow trunnion of a coffee-roasting drum,of a block sta tionarily arranged therein, a rotatable disk within theblock and having a peripheral recess or cavity, gearing between the saiddisk and the trunnion whereby the rotation of the latter effectssimultaneous rotation of the disk, and a tray carried by the blockadapted to receive the contents of the recess at each rotation of thedisk.

6. The combination with the hollow trunnion of a coffee-roasting drumhaving teeth on its outer face, of a block stationarily arranged withinthe truunion, a disk rotatably arranged within the block, a gear-Wheelcarried by the disk, a shaft provided at one end with a gear-wheelgearing with the gear-wheel on the disk, and a second gear-wheel gearingWith the teeth on the trunnion, and a tray carried by the block adaptedto receive the contents of the recess at each rotation of the disk.

7. The combination with a hollow trunnion of a roasting-drum, of a blockstationarily arranged therein, and a disk rotatably arranged within theblock and adapted to receive samples of the roasting berries anddischarge the same exteriorly of the trunnion, as specified. 8. Thecombination with a hollow trunnion of a roasting-drum, of a plate ordisk rotatably arranged in a vertical plane and operating to receive ateach rotation of the disk a sample of the roasting berries and dischargethe same exteriorly of the trunnion.

In testimony whereof we affix our signatures in presence of twowitnesses.

EDXVIN GRAXVLEY, JR. XVM. T. JOHNSTON.

lVitnesses:

SAML. S. CHURCH, H. M. KELLER.

